Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc0e66dcd48e4dee…

MALICIOUS

PDF

42.8 KB Created: 2021-06-03 07:27:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 22899f938878aea8aa7b8b6576059cf7 SHA-1: 25a5ff7604990fe784fa78a19375b0d538f5914c SHA-256: dc0e66dcd48e4dee0635966b1ee801f6b08d2bd3c086e729919775b04e033abf
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-severity heuristic firing for a 'GAME_HACK_REDIRECT_LURE', indicating it links to a site promising game hacks. The ML classifier also flagged the PDF as malicious. The embedded URLs and document body content reinforce this, pointing towards a social engineering lure for potentially unwanted software or further malicious content. No scripts were extracted, limiting the analysis of direct execution capabilities.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9874

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://netcdn.online/app/406889139/coin-master-jackpot-madness-hack-game-hack PDF link annotation
    • http://librarysenior.com/repository/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • http://librarysenior.com//repository/coin-master-cards-for-free_GM406889139.pdfIn PDF document text
    • http://librarysenior.com//repository/coin-master-rewards-free-spins_GM406889139.pdfIn PDF document text
    • http://librarysenior.com//repository/free-spin-app-for-coin-master_GM406889139.pdfIn PDF document text
    • http://librarysenior.com//repository/how-do-you-hack-roblox_GM431946152.pdfIn PDF document text
    • http://librarysenior.com//repository/get-more-robux_GM431946152.pdfIn PDF document text
    • http://librarysenior.com//repository/free-coins-coin-master-link-today_GM406889139.pdfIn PDF document text
    • http://librarysenior.com//repository/lazyblocks-com-free-robux_GM431946152.pdfIn PDF document text
    • http://librarysenior.com//repository/coin-master-hack-mod-game-download_GM406889139.pdfIn PDF document text
    • http://librarysenior.com/repository/minecraft-bedrock-client_GM479516143.pdfIn PDF document text
    • http://librarysenior.com//repository/coin-master-free-coins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://librarysenior.com//repository/earn-robux-today-earn-robux-today_GM431946152.pdfIn PDF document text
    • http://librarysenior.com//repository/get-robux-now_GM431946152.pdfIn PDF document text
    • http://librarysenior.com//repository/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
    • http://librarysenior.com/repository/coin-master-free-spins-link-2021-hack_GM406889139.pdfIn PDF document text
    • http://librarysenior.com//repository/bux-free-robux_GM431946152.pdfIn PDF document text
    • http://librarysenior.com//repository/coin-master-free-spins-link-facebook_GM406889139.pdfIn PDF document text
    • http://librarysenior.com//repository/free-robux-on-iphone_GM431946152.pdfIn PDF document text
    • http://librarysenior.com//repository/robux-game_GM431946152.pdfIn PDF document text
    • http://librarysenior.com//repository/coin-master-hack-apk-android-1_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004cab.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CAB 24296 bytes
SHA-256: 514de31295da17d20f45d41b529c9ad38365dad6951203a57d34065832885339
font_01_sfnt_off00008478.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8478 18232 bytes
SHA-256: 7e7ffe0925f069372f8aec15272312b752d771f30cadb28f8d6f8a4187954caf

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